Weather warnings
Jul
01
Weather Warning
Rainy conditions in the Caribbean and Northern Zone this Tuesday and Tropical Wave #12
Jul 01th, 2025
10 am
Diagnosis The strengthening of the trade winds over the central and northern regions of the country has produced wind gusts of up to 50 km/h in areas such as Alajuela this morning. This...
Jun
28
Weather Warning
Tropical Wave #10 over Costa Rica
June 28th, 2025
10:30 a.m.
Diagnosis: Tropical wave #10 is over the country this Saturday, causing instability in maritime areas of the Caribbean and northern parts of the Northern Zone. There has been increasing...
Jun
27
Weather Warning -Update-
Rainy Afternoon in Costa Rica
June 27th, 2025
05.40 p.m.
Forecast: After the passage of Tropical Wave 9 yesterday, Thursday, the atmosphere remains unstable over the country. Along with warm morning temperatures and high humidity from recent rains,...
Jun
27
Weather Warning
Tarde lluviosa en Costa Rica
June 27th, 2025
10:00 am
Diagnosis: After the passage of tropical wave #9 on Thursday, the atmosphere continues to be unstable over the country, which, together with the warm temperatures of this morning and the high...
Jun
26
Weather Warning | Update
Rainfall activity of varying intensity this afternoon in the Pacific and Northern Zone
June 26, 2025
5:00 p.m.
Diagnostic: The passage of Tropical Wave #9, in combination with the Intertropical Convergence Zone, maintains atmospheric instability over the country. This has generated rain showers and...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Meteorológico-IMN-191020-0300pm
Oct
19
Weather Warning
Affection by Tropical Wave # 46 this Monday -Update-
October 19, 20
03.00 p.m.
Discussion: The tropical wave is transiting over our country this day, during its passage it has contributed to increasing atmospheric instability over our territory. This situation, together with the influence of the Intertropical Convergence Zone, has generated heavy downpours in various parts of the Pacific (maximum points of 110 mm in Liberia and 40 mm in Osa) and the Central Valley (maximum between 15-25 mm).
Forecast: For the remainder of this afternoon and early evening, rainy conditions will continue on the Pacific slope, especially in the central area of Guanacaste, the high areas of the Central and South Pacific, as well as the surroundings of the border with Panama. Heavy downpours with storm are expected for these regions, accumulated estimated between 20-60 mm. In the Central Valley (mainly in the western and northern areas, in addition to the high parts) and the mountains of the Caribbean and the North Zone, isolated rains are expected with occasional showers and storms. Estimated accumulations between 15-40 mm
Warning: Special attention for possible incidents due to saturation of the soils in the South Pacific in the upper parts of the North Zone and the Central Pacific.
Due to the above, the IMN recommends:
- Caution in areas vulnerable to flooding due to sewer saturation.
- Take shelter in a safe place in case of hearing an electrical storm or perceive strong gusts of wind near the storm clouds, as well as caution against possible falling tree branches, power lines, among others.
- Stay informed through social networks, Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the WEB Page: www.imn.ac.cr
Roberto Vindas
Meteorologist
DMSA-IMN
